If you mean by abilities, I agree. Most of the tuning that exist on systemd doesn't exist for runit, at least out of the box or to my knowledge. However what I meant is, with systemd I don't know what's going on on my system, with runit I know every single service because I put them there in the first place. Of course systemd covers most of the things nowadays, while I have to deal with power management, networking, display manager, login manager etc all separately. Doing the Unix way is simple, while systemd grew to be quite complex.
For my daily usage it suffices. For my home server, I still prefer Debian with systemd (though I'm checking Alpine nowadays) because I'm lazy for that case and systemd does everything for me.